首页> 外文期刊>Designs, Codes and Crytography >Practical unconditionally secure two-channel message authentication
【24h】

Practical unconditionally secure two-channel message authentication

机译:实用的无条件安全两通道消息身份验证

获取原文
获取原文并翻译 | 示例
           

摘要

We investigate unconditional security for message authentication protocols that are designed using two-channel cryptography. (Two-channel cryptography employs a broadband, insecure wireless channel and an authenticated, narrow-band manual channel at the same time.) We study both noninteractive message authentication protocols (NIMAPs) and interactive message authentication protocols (IMAPs) in this setting. First, we provide a new proof of nonexistence of nontrivial unconditionally secure NIMAPs. This proof consists of a combinatorial counting argument and is much shorter than the previous proof by Wang and Safavi-Naini, which was based on probability distribution arguments. We also prove a new result which holds in a weakened attack model. Further, we propose a generalization of an unconditionally secure 3-round IMAP due to Naor, Segev and Smith. The IMAP is based on two €-A universal hash families. With a careful choice of parameters, our scheme improves that of Naor et al. Our scheme is very close to optimal for most parameter situations of practical interest. Finally, a variation of the 3-round IMAP is presented, in which only one hash family is required.
机译:我们研究了使用两通道加密技术设计的消息身份验证协议的无条件安全性。 (两通道密码术同时使用宽带,不安全的无线通道和经过身份验证的窄带手动通道。)在这种情况下,我们同时研究了非交互式消息身份验证协议(NIMAP)和交互式消息身份验证协议(IMAP)。首先,我们提供了非平凡的无条件安全NIMAP不存在的新证明。该证明由组合计数论证组成,比Wang和Safavi-Naini先前的基于概率分布论证的证明短得多。我们还证明了在弱化攻击模型中具有的新结果。此外,由于Naor,Segev和Smith,我们提出了无条件安全的3轮IMAP的推广。 IMAP基于两个€-A通用哈希系列。通过仔细选择参数,我们的方案改进了Naor等人的方案。对于实际感兴趣的大多数参数情况,我们的方案非常接近最优。最后,提出了一种3轮IMAP的变体,其中仅需要一个哈希家族。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号